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Li XX, Cheng RJ, Wang Q, Liu DJ, Lv SY, Huang ZM, Zhang ST, Li XM, Chen ZJ, Wang Q, Liu ZJ, Cao LH, Zheng CY, He XT. Anomalous staged hot-electron acceleration by two-plasmon decay instability in magnetized plasmas. Phys Rev E 2023; 108:L053201. [PMID: 38115515 DOI: 10.1103/physreve.108.l053201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 10/12/2023] [Indexed: 12/21/2023]
Abstract
We present a staged hot-electron acceleration mechanism of the two-plasmon decay (TPD) instability in the transverse magnetic field under the parameters relevant to inertial confinement fusion experiments. After being accelerated by the forward electron plasma wave (FEPW) of TPD, the hot-electrons can be anomalously accelerated again by the backward electron plasma wave (BEPW) of TPD and then obtain higher energy. Moreover, the surfatron acceleration mechanism of TPD in the magnetic field is also confirmed, the electrons trapped by the TPD daughter EPWs are accelerated in the direction along the wave front. Interestingly, the velocity of electrons accelerated by surfing from the FEPW is quite easily close to the BEPW phase velocity, which markedly enhances the efficiency of the staged acceleration. The coexistence of these two acceleration mechanisms leads to a significant increase of energetic electrons generated by TPD in the magnetic field. Meanwhile the EPWs are dissipated, TPD instability is effectively suppressed, and the laser transmission increases.
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Affiliation(s)
- X X Li
- Institute of Applied Physics and Computational Mathematics, Beijing 100094, China
| | - R J Cheng
- Institute of Applied Physics and Computational Mathematics, Beijing 100094, China
| | - Qing Wang
- Institute of Applied Physics and Computational Mathematics, Beijing 100094, China
| | - D J Liu
- Institute of Applied Physics and Computational Mathematics, Beijing 100094, China
| | - S Y Lv
- Institute of Applied Physics and Computational Mathematics, Beijing 100094, China
| | - Z M Huang
- Institute of Applied Physics and Computational Mathematics, Beijing 100094, China
| | - S T Zhang
- Institute of Applied Physics and Computational Mathematics, Beijing 100094, China
| | - X M Li
- Institute of Applied Physics and Computational Mathematics, Beijing 100094, China
| | - Z J Chen
- HEDPS, Center for Applied Physics and Technology, and State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - Qiang Wang
- Institute of Applied Physics and Computational Mathematics, Beijing 100094, China
| | - Z J Liu
- Institute of Applied Physics and Computational Mathematics, Beijing 100094, China
- HEDPS, Center for Applied Physics and Technology, and College of Engineering, Peking University, Beijing 100871, China
| | - L H Cao
- Institute of Applied Physics and Computational Mathematics, Beijing 100094, China
- HEDPS, Center for Applied Physics and Technology, and College of Engineering, Peking University, Beijing 100871, China
| | - C Y Zheng
- Institute of Applied Physics and Computational Mathematics, Beijing 100094, China
- HEDPS, Center for Applied Physics and Technology, and College of Engineering, Peking University, Beijing 100871, China
| | - X T He
- Institute of Applied Physics and Computational Mathematics, Beijing 100094, China
- HEDPS, Center for Applied Physics and Technology, and College of Engineering, Peking University, Beijing 100871, China
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